Abstract
The present study aimed to evaluate the dominant microbial community naturally present in the Planalto de Bolona cheese, produced in the Cape Verde Islands. Samples of milk, curd and cheese from two different producers were examined through culture-dependent and independent-methods. Traditional plating and genetic identification of lactic acid bacteria (LAB) and yeast isolates were carried out. Moreover, DNA and RNA extracted directly from samples were subjected to Polymerase Chain Reaction-Denaturing Gradient Gel Electrophoresis (PCR-DGGE). Concerning the LAB population, a total of 278 isolates were identified: Lactococcus lactis subsp. lactis and Enterococcus faecium represented the most isolated species. Regarding yeasts, the analysis of isolates throughout the manufacturing period showed a consistent presence of the genus Candida. Divergences in species detection between culture-dependent and culture-independent methods were observed, as well as between DNA and RNA analysis. PCR-DGGE underlined high heterogeneity among bacterial species while yeast microbiota was dominated by Aureobasidium pullulans at DNA level. The obtained results represent a first approach in the understanding of the Planalto de Bolona cheese microbial ecology and consequently may constitute a first step towards the full comprehension of the microbiota of this artisanal cheese produced in unusual environmental conditions in the Cape Verde Islands.
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Authors express their gratitude to Prof. Giuseppe Quaranta, Department of Animal Pathology, Faculty of Veterinary Medicine, University of Turin, from the collection of the samples in the Cape Verde Islands.
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Alessandria, V., Dolci, P., Rantsiou, K. et al. Microbiota of the Planalto de Bolona: an artisanal cheese produced in uncommon environmental conditions in the Cape Verde Islands. World J Microbiol Biotechnol 26, 2211–2221 (2010). https://doi.org/10.1007/s11274-010-0406-7
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DOI: https://doi.org/10.1007/s11274-010-0406-7